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      1 /*
      2  * Copyright (C) 2011 Research In Motion Limited. All rights reserved.
      3  *
      4  * This library is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU Library General Public
      6  * License as published by the Free Software Foundation; either
      7  * version 2 of the License, or (at your option) any later version.
      8  *
      9  * This library is distributed in the hope that it will be useful,
     10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * Library General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU Library General Public License
     15  * along with this library; see the file COPYING.LIB.  If not, write to
     16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17  * Boston, MA 02110-1301, USA.
     18  */
     19 
     20 #ifndef SVGImageCache_h
     21 #define SVGImageCache_h
     22 
     23 #include "core/platform/graphics/FloatSize.h"
     24 #include "core/platform/graphics/Image.h"
     25 #include "core/platform/graphics/IntSize.h"
     26 #include "wtf/HashMap.h"
     27 #include "wtf/PassOwnPtr.h"
     28 #include "wtf/RefPtr.h"
     29 
     30 namespace WebCore {
     31 
     32 class ImageResource;
     33 class ImageResourceClient;
     34 class ImageBuffer;
     35 class SVGImage;
     36 class SVGImageForContainer;
     37 class RenderObject;
     38 
     39 class SVGImageCache {
     40     WTF_MAKE_FAST_ALLOCATED;
     41 public:
     42     ~SVGImageCache();
     43 
     44     static PassOwnPtr<SVGImageCache> create(SVGImage* image)
     45     {
     46         return adoptPtr(new SVGImageCache(image));
     47     }
     48 
     49     void removeClientFromCache(const ImageResourceClient*);
     50 
     51     void setContainerSizeForRenderer(const ImageResourceClient*, const IntSize&, float);
     52     IntSize imageSizeForRenderer(const RenderObject*) const;
     53 
     54     Image* imageForRenderer(const RenderObject*);
     55 
     56 private:
     57     SVGImageCache(SVGImage*);
     58 
     59     typedef HashMap<const ImageResourceClient*, RefPtr<SVGImageForContainer> > ImageForContainerMap;
     60 
     61     SVGImage* m_svgImage;
     62     ImageForContainerMap m_imageForContainerMap;
     63 };
     64 
     65 } // namespace WebCore
     66 
     67 #endif // SVGImageCache_h
     68